CA2146125C - Metal panel fastener - Google Patents
Metal panel fastenerInfo
- Publication number
- CA2146125C CA2146125C CA002146125A CA2146125A CA2146125C CA 2146125 C CA2146125 C CA 2146125C CA 002146125 A CA002146125 A CA 002146125A CA 2146125 A CA2146125 A CA 2146125A CA 2146125 C CA2146125 C CA 2146125C
- Authority
- CA
- Canada
- Prior art keywords
- fastener
- shank
- underside
- recess
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000000565 sealant Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 239000004593 Epoxy Substances 0.000 claims description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920006311 Urethane elastomer Polymers 0.000 claims description 5
- 229920005549 butyl rubber Polymers 0.000 claims description 5
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 230000004888 barrier function Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/004—Sealing; Insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/914—Coated bolt
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Bolts, Nuts, And Washers (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A fastener (10) for fastening a pair of metal panels (12, 14) comprises a head (20) which has an annular recess (26) at its underside. A threaded shank (30) has a buttress thread (40) which terminates in a self-driving tip (34). A sealant/adhesive coating (50) is pre-applied to the fastener. The coating seals and bonds between the fastener and the panels upon installation of the fastener.
Description
~ W O 94/10465 2 1 4 6 1 2 ~ PC~r/US93/09986 MET~iL PANEL FAS ~:N ~:~
Background of the Invention This invention relates generally to fasteners which are employed to fasten metal panels such as sheet metal.
More particularly, the present invention relates to fasteners which are employed for fastening panel roofs.
Roofing systems for metal buildings frequently employ metal roofs comprising corrugated or trapezoidal metal panels which are fastened by conventional "sheet metal fasteners". A roofing composition is then applied to the panels to provide a water barrier. While conventional metal roof systems have proved to perform satisfactorily over time, it is indisputable that metal roofs do have a significant failure rate. A principal source of failure occurs when the fasteners loosen. If there is poor drainage or the seam seals fail, moisture may migrate to the vicinity of the fastener opening. The moisture may then lead to corrosion which eventually may attain a magnitude that jeopardizes the integrity of the roof system. A number of metal roof coating systems have been introduced to compensate for the failure problems of the conventional metal roof by enhancing the water barrier system of the roof. However, fastener failure remains a significant problem if there is inadequate roof securement.
In typical metal roof construction, the metal panels are secured by numerous sheet metal fasteners. The sheet metal fasteners are conventionally self-drilling threaded fasteners which in tandem with a washer are driven by torque guns into the metal supports. The fasteners are typically installed from on top of the roof panel in a routine labor intensive process. The panels will eventually tend to move or slide due to structural settling and also due to environmental factors such as wide 2146~
temperature differentials, intense heat, winds, and the impact of rain and snow including their collection onto the roof structure. The sliding-type movements of the panels tend to force the fasteners sideways and eventually upwardly out of locking relationship. The immediate vicinity of the panel surrounding the fastener opening which is exposed by the loosened fastener becomes a source of collection of moisture and ultimately a source of corrosion, so that the fastener provides no securement function whatsoever. If fastener failure becomes excessive, the roof system will essentially fail and repair or replacement will be required.
~mary of the Invention Briefly stated, the invention in a preferred form is a fastener for fastening a pair of metal panels. The fastener comprises a head having an underside which includes a recess. The head may have a rounded or hex head-type configuration including an integral washer or flange extending radially therefrom. The recess extends axially from the underside of the head with the recess surrounding the proximal head portion. The shank is traversed by a spiral buttress thread. The support surface of the buttress thread is oriented at an angle between 0 degrees and 15 degrees to a normal line to the axis of the shank. The second driving surface which defines the buttress thread is inclined to the normal line at an angle between 25 degrees and 65 degrees. The distal tip of the shank includes a self-drilling configuration for drilling into the metal panel, such as a dual fluted drill tip-type arrangement.
A sealant and/or adhesive coating may be applied to the upper portion of the shank and the recess. The coating is pre-applied to the fastener and assumes a stable, solid form. Upon installation of the fastener, the coating ~ W O 94/10465 PC~r/US93/09986 functions to seal against the upper threads and the upper underside of the head and also functions as an adhesive.
In a preferred form, the coating may be an adhesive which is composed of a two part epoxy or other adhesive system.
The coating may also be a sealant having a silicone, wax, urethane, neoprene or butyl rubber composition.
Alternately, a sealant washer may be pre-positioned at the recess for sealing against the underside of the head and the metal panel.
When the fastener is driven through a pair of metal panels, the support surface of the buttress thread engages the underside of the bottom panel and the head is forced downwardly toward the top surface of the upper panel thereby me~hAn;cally locking the panels together. In addition, the sealant/adhesive is distributed so that a bonded sealing engagement is provided between the fastener head and the top of the metal panel, and in addition, a bonded sealing engagement is provided between the upper threaded portion of the shank and the adjacent threadably engaged panel.
An object of the invention is to provide a new and improved fastener for securing a metal panel.
Another object of the invention is to provide a new and improved fastener for a metal panel which implements both an enhanced mechanical lock and an improved bond and seal engagement with the panels.
A further object of the invention is to provide a new and improved system for fastening a metal roof.
Other objects and advantages of the invention will become apparent from the drawings and the specification.
~rief Description of the Drawinqs Figure 1 is a side elevational view, partly in schematic, of a metal panel fastener in accordance with the present invention;
~6i~2~
Figure 2 is a top plan view of the fastener of Figure l;
Figure 3 is an enlarged fragmentary view, partly in schematic, of a portion of the thread of the fastener of Figure 1;
Figure 4 is a side elevational view of a second embodiment of a metal panel fastener in accordance with the present invention;
Figure 5 is a sectional view of the fastener of Figure 4 taken along the line 5 - 5 thereof; and Figure 6 is a side elevational view of the metal panel fastener of Figure 1 illustrated in an installed configuration fastening a pair of metal panels, portions of which are illustrated in section.
Detailed Description of the Preferred Embodiment With reference to the drawings wherein like numerals represent like parts throughout the figures, a metal panel fastener in accordance with the invention is generally designated by the numeral 10. Fastener 10 is adapted for securing a metal panel 12 to a second metal panel 14 or a support structure such as illustrated in Figure 6. The fastener 10 is particularly applicable for fastening metal roof panels, but also is readily applicable for use with fastening metal panels in general, such as metal panels of a wall, a trailer or an appliance.
With reference to Figure 1, fastener 10 includes a head 20 which has a square socket 22 for receiving a complementary driver of a pneumatic or electric torque gun (not illustrated). The head has a underside portion which includes an integral circumferential flange or washer 24.
The underside of the head further includes an annular recess 26.
A shank 30 integrally extends at its proximal end 32 from the underside of the head. The annular recess 26 ~ WO94/10465 ~ 1 4 6 1 2 ~ PCT/US93/09986 surrounds the proximal end of the shank. The shank terminates in a tapered distal tip 34. The shank 30 is traversed by a buttress thread 40 which extends from approximately the proximal end 32 and terminates in tapered fashion near the distal end. With reference to Figure 4, the buttress thread 40 includes a support surface 42 and a driving surface 44. In a preferred form, the support surface 42 is oriented at an angle of approximately 10 degrees to a normal line N to the central axis A of the shank. Preferably, the angle a between normal line N and the support surface 42 is between 0 degrees and 15 degrees. The driving surface 44 is preferably oriented at an angle of approximately 35 degrees a normal line N to the shank axis A. In preferred form, the angle of b between the normal line N and the driving surface 44 is between 25 degrees and 65 degrees.
The distal portion of the shank terminates in a pair of fluted slots 46 which are structured to provide a drill tip for self-drilling into the metal panel. The distal portion may also be configured for self-piercing into the metal panels. The thread configuration provides for self-tapping. The slots 46 are oriented at an angle of approximately 26 degrees to the axis A of the shank.
Dimensions for two examples of the fastener 10 which are manufactured from steel and heat treated are set forth in the table below (dimensions in inches):
shank length 0.750 1.00 root diameter .148 .152 thread diameter .230 .235 tip diameter .125 .134 washer diameter .530 .540 A coating 50 of a sealant and/or an adhesive is pre-applied to the underside of the head and the top of the WO94/10465 21~ PCT/US93/09986 threaded shank. The coating eXtends into the recess 26.
The coating 50 is applied in a form which results in a tapered quasi-conical mass as best illustrated in Figure l. A sealant form of the coating 50 may be a composition such as a silicone, wax, urethane, neoprene or butyl rubber composition. A sealant adhesive form of the coating 50 may be a two part epoxy system which has an ultraviolet cured skin. The coating 50 may be sprayed, dripped on or contact applied.
The sealant/adhesive coating 50 has properties and is applied to the fastener so that the coating does not significantly increase the resistance to driving when the fastener is installed and provides a good adhesion to the thread when the adhesive is in an uncured state. The coating 50 cures outside of the joint provided by the fastener under the fastener head and has good adhesion to painted surfaces and to threads upon curing. The cured adhesive is flexible enough to withstand movement of the fastener panel joint whether due to environmental forces such as temperature changes or settling that will occur in the structure. The coating 50 upon curing preferably provides an adhesive-type bond which is capable of curing in ambient temperatures.
With reference to Figures 4 and 5, a second embodiment of a fastener 60 has a hex head 62 and is otherwise similar to fastener lO except that a nylon gasket or other deformable plastic gasket 64 is pressed into the annular recess 66 at the underside of the head. In this embodiment, the sealant/adhesive coating 50 is not applied to the fastener although it may optionally be applied as described above. The gasket 64 is compressed upon installation of the fastener and seals between the fastener head and the panel.
With reference to Figure 6, the installed fastener lO
is illustrated in an installed position for securing ~ WO94/10465 PCT/US93/09986 214~6125 together two panels 12, 14. It should be appreciated that the upper portions of the support surface 42 of the buttress thread 40 provides a ledge for locking the upper sheet metal panel 12 and the support panel 14. The sealant/adhesive coating 50 is forced into intimate relationship between the underside of the washer 24 and the head and the top surface of the panel to provide for an effective seal as well as a bonding between the head and the panel. In addition, the coating 50 provides a sealing and a bonding between the upper proximal portions of the thread shank and the adjacent threaded opening portions of the panels. During the natural course of installation, it is not uncommon for fasteners to immediately strip from the metal substrate. The adhesive will positively lock and seal the fastener to the metal panels even if fastener stripping should occur.
While the fastener may be installed by conventional installation techniques, it should be appreciated that fasteners 10, 60 provide both a superior mechanical lock as well as a superior seal and bonding relationship between the panels than is provided by the heretofore described conventional sheet metal fasteners. The combination of the buttress thread and the drill tip enhances the resistance of the fastener to turn-out.
It will be appreciated that the head of the fastener alternately may be configured in a round head configuration having a slot for a driver blade or any other conventional fastener head configurations.
While a preferred embodiment of the foregoing invention has been set forth for purposes of illustration, the foregoing description should not be deemed a limitation of the invention herein. Accordingly, various modifications, adaptations and alternatives may occur to one skilled in the art without departing from the spirit and the scope of the present invention.
Background of the Invention This invention relates generally to fasteners which are employed to fasten metal panels such as sheet metal.
More particularly, the present invention relates to fasteners which are employed for fastening panel roofs.
Roofing systems for metal buildings frequently employ metal roofs comprising corrugated or trapezoidal metal panels which are fastened by conventional "sheet metal fasteners". A roofing composition is then applied to the panels to provide a water barrier. While conventional metal roof systems have proved to perform satisfactorily over time, it is indisputable that metal roofs do have a significant failure rate. A principal source of failure occurs when the fasteners loosen. If there is poor drainage or the seam seals fail, moisture may migrate to the vicinity of the fastener opening. The moisture may then lead to corrosion which eventually may attain a magnitude that jeopardizes the integrity of the roof system. A number of metal roof coating systems have been introduced to compensate for the failure problems of the conventional metal roof by enhancing the water barrier system of the roof. However, fastener failure remains a significant problem if there is inadequate roof securement.
In typical metal roof construction, the metal panels are secured by numerous sheet metal fasteners. The sheet metal fasteners are conventionally self-drilling threaded fasteners which in tandem with a washer are driven by torque guns into the metal supports. The fasteners are typically installed from on top of the roof panel in a routine labor intensive process. The panels will eventually tend to move or slide due to structural settling and also due to environmental factors such as wide 2146~
temperature differentials, intense heat, winds, and the impact of rain and snow including their collection onto the roof structure. The sliding-type movements of the panels tend to force the fasteners sideways and eventually upwardly out of locking relationship. The immediate vicinity of the panel surrounding the fastener opening which is exposed by the loosened fastener becomes a source of collection of moisture and ultimately a source of corrosion, so that the fastener provides no securement function whatsoever. If fastener failure becomes excessive, the roof system will essentially fail and repair or replacement will be required.
~mary of the Invention Briefly stated, the invention in a preferred form is a fastener for fastening a pair of metal panels. The fastener comprises a head having an underside which includes a recess. The head may have a rounded or hex head-type configuration including an integral washer or flange extending radially therefrom. The recess extends axially from the underside of the head with the recess surrounding the proximal head portion. The shank is traversed by a spiral buttress thread. The support surface of the buttress thread is oriented at an angle between 0 degrees and 15 degrees to a normal line to the axis of the shank. The second driving surface which defines the buttress thread is inclined to the normal line at an angle between 25 degrees and 65 degrees. The distal tip of the shank includes a self-drilling configuration for drilling into the metal panel, such as a dual fluted drill tip-type arrangement.
A sealant and/or adhesive coating may be applied to the upper portion of the shank and the recess. The coating is pre-applied to the fastener and assumes a stable, solid form. Upon installation of the fastener, the coating ~ W O 94/10465 PC~r/US93/09986 functions to seal against the upper threads and the upper underside of the head and also functions as an adhesive.
In a preferred form, the coating may be an adhesive which is composed of a two part epoxy or other adhesive system.
The coating may also be a sealant having a silicone, wax, urethane, neoprene or butyl rubber composition.
Alternately, a sealant washer may be pre-positioned at the recess for sealing against the underside of the head and the metal panel.
When the fastener is driven through a pair of metal panels, the support surface of the buttress thread engages the underside of the bottom panel and the head is forced downwardly toward the top surface of the upper panel thereby me~hAn;cally locking the panels together. In addition, the sealant/adhesive is distributed so that a bonded sealing engagement is provided between the fastener head and the top of the metal panel, and in addition, a bonded sealing engagement is provided between the upper threaded portion of the shank and the adjacent threadably engaged panel.
An object of the invention is to provide a new and improved fastener for securing a metal panel.
Another object of the invention is to provide a new and improved fastener for a metal panel which implements both an enhanced mechanical lock and an improved bond and seal engagement with the panels.
A further object of the invention is to provide a new and improved system for fastening a metal roof.
Other objects and advantages of the invention will become apparent from the drawings and the specification.
~rief Description of the Drawinqs Figure 1 is a side elevational view, partly in schematic, of a metal panel fastener in accordance with the present invention;
~6i~2~
Figure 2 is a top plan view of the fastener of Figure l;
Figure 3 is an enlarged fragmentary view, partly in schematic, of a portion of the thread of the fastener of Figure 1;
Figure 4 is a side elevational view of a second embodiment of a metal panel fastener in accordance with the present invention;
Figure 5 is a sectional view of the fastener of Figure 4 taken along the line 5 - 5 thereof; and Figure 6 is a side elevational view of the metal panel fastener of Figure 1 illustrated in an installed configuration fastening a pair of metal panels, portions of which are illustrated in section.
Detailed Description of the Preferred Embodiment With reference to the drawings wherein like numerals represent like parts throughout the figures, a metal panel fastener in accordance with the invention is generally designated by the numeral 10. Fastener 10 is adapted for securing a metal panel 12 to a second metal panel 14 or a support structure such as illustrated in Figure 6. The fastener 10 is particularly applicable for fastening metal roof panels, but also is readily applicable for use with fastening metal panels in general, such as metal panels of a wall, a trailer or an appliance.
With reference to Figure 1, fastener 10 includes a head 20 which has a square socket 22 for receiving a complementary driver of a pneumatic or electric torque gun (not illustrated). The head has a underside portion which includes an integral circumferential flange or washer 24.
The underside of the head further includes an annular recess 26.
A shank 30 integrally extends at its proximal end 32 from the underside of the head. The annular recess 26 ~ WO94/10465 ~ 1 4 6 1 2 ~ PCT/US93/09986 surrounds the proximal end of the shank. The shank terminates in a tapered distal tip 34. The shank 30 is traversed by a buttress thread 40 which extends from approximately the proximal end 32 and terminates in tapered fashion near the distal end. With reference to Figure 4, the buttress thread 40 includes a support surface 42 and a driving surface 44. In a preferred form, the support surface 42 is oriented at an angle of approximately 10 degrees to a normal line N to the central axis A of the shank. Preferably, the angle a between normal line N and the support surface 42 is between 0 degrees and 15 degrees. The driving surface 44 is preferably oriented at an angle of approximately 35 degrees a normal line N to the shank axis A. In preferred form, the angle of b between the normal line N and the driving surface 44 is between 25 degrees and 65 degrees.
The distal portion of the shank terminates in a pair of fluted slots 46 which are structured to provide a drill tip for self-drilling into the metal panel. The distal portion may also be configured for self-piercing into the metal panels. The thread configuration provides for self-tapping. The slots 46 are oriented at an angle of approximately 26 degrees to the axis A of the shank.
Dimensions for two examples of the fastener 10 which are manufactured from steel and heat treated are set forth in the table below (dimensions in inches):
shank length 0.750 1.00 root diameter .148 .152 thread diameter .230 .235 tip diameter .125 .134 washer diameter .530 .540 A coating 50 of a sealant and/or an adhesive is pre-applied to the underside of the head and the top of the WO94/10465 21~ PCT/US93/09986 threaded shank. The coating eXtends into the recess 26.
The coating 50 is applied in a form which results in a tapered quasi-conical mass as best illustrated in Figure l. A sealant form of the coating 50 may be a composition such as a silicone, wax, urethane, neoprene or butyl rubber composition. A sealant adhesive form of the coating 50 may be a two part epoxy system which has an ultraviolet cured skin. The coating 50 may be sprayed, dripped on or contact applied.
The sealant/adhesive coating 50 has properties and is applied to the fastener so that the coating does not significantly increase the resistance to driving when the fastener is installed and provides a good adhesion to the thread when the adhesive is in an uncured state. The coating 50 cures outside of the joint provided by the fastener under the fastener head and has good adhesion to painted surfaces and to threads upon curing. The cured adhesive is flexible enough to withstand movement of the fastener panel joint whether due to environmental forces such as temperature changes or settling that will occur in the structure. The coating 50 upon curing preferably provides an adhesive-type bond which is capable of curing in ambient temperatures.
With reference to Figures 4 and 5, a second embodiment of a fastener 60 has a hex head 62 and is otherwise similar to fastener lO except that a nylon gasket or other deformable plastic gasket 64 is pressed into the annular recess 66 at the underside of the head. In this embodiment, the sealant/adhesive coating 50 is not applied to the fastener although it may optionally be applied as described above. The gasket 64 is compressed upon installation of the fastener and seals between the fastener head and the panel.
With reference to Figure 6, the installed fastener lO
is illustrated in an installed position for securing ~ WO94/10465 PCT/US93/09986 214~6125 together two panels 12, 14. It should be appreciated that the upper portions of the support surface 42 of the buttress thread 40 provides a ledge for locking the upper sheet metal panel 12 and the support panel 14. The sealant/adhesive coating 50 is forced into intimate relationship between the underside of the washer 24 and the head and the top surface of the panel to provide for an effective seal as well as a bonding between the head and the panel. In addition, the coating 50 provides a sealing and a bonding between the upper proximal portions of the thread shank and the adjacent threaded opening portions of the panels. During the natural course of installation, it is not uncommon for fasteners to immediately strip from the metal substrate. The adhesive will positively lock and seal the fastener to the metal panels even if fastener stripping should occur.
While the fastener may be installed by conventional installation techniques, it should be appreciated that fasteners 10, 60 provide both a superior mechanical lock as well as a superior seal and bonding relationship between the panels than is provided by the heretofore described conventional sheet metal fasteners. The combination of the buttress thread and the drill tip enhances the resistance of the fastener to turn-out.
It will be appreciated that the head of the fastener alternately may be configured in a round head configuration having a slot for a driver blade or any other conventional fastener head configurations.
While a preferred embodiment of the foregoing invention has been set forth for purposes of illustration, the foregoing description should not be deemed a limitation of the invention herein. Accordingly, various modifications, adaptations and alternatives may occur to one skilled in the art without departing from the spirit and the scope of the present invention.
Claims (23)
1. A fastener for fastening a pair of metal panels comprising:
head means comprising a top portion and an underside and recess means for defining a recess at said underside;
and shank means integrally extending from said underside at a proximal end and terminating at a distal tip and defining an axis thereof, said recess surrounding said shank means at said proximal end, said shank means having a spiral buttress thread extending from a location adjacent said proximal end and defining a first support surface which is oriented at an angle between 0 degrees and 15 degrees to a normal line to the axis of said shank and a second surface which is inclined to said normal line at an angle between 25 and 65 degrees, said shank means comprising self-drilling means adjacent said distal tip for self-drilling into a metal panel, whereby said buttress thread is engageable against said metal panels to clamp said metal panels against said head means.
head means comprising a top portion and an underside and recess means for defining a recess at said underside;
and shank means integrally extending from said underside at a proximal end and terminating at a distal tip and defining an axis thereof, said recess surrounding said shank means at said proximal end, said shank means having a spiral buttress thread extending from a location adjacent said proximal end and defining a first support surface which is oriented at an angle between 0 degrees and 15 degrees to a normal line to the axis of said shank and a second surface which is inclined to said normal line at an angle between 25 and 65 degrees, said shank means comprising self-drilling means adjacent said distal tip for self-drilling into a metal panel, whereby said buttress thread is engageable against said metal panels to clamp said metal panels against said head means.
2. The fastener of claim 1 wherein said head defines a square socket at the top portion thereof.
3. The fastener of claim 1 wherein an integral flange radially extends at the underside of said head means.
4. The fastener of claim 1 wherein said self-drilling means further comprises a dual fluted slot configuration.
5. The fastener of claim 1 wherein said distal tip is configured in a self-piercing point.
6. The fastener of claim 1 wherein said support surface angle is 10 degrees.
7. The fastener of claim 1 wherein said second surface angle is 35 degrees.
8. The fastener of claim 1 further comprising a coating affixed at the underside of said head means and the proximal portions of said shank means.
9. The fastener of claim 8 wherein said coating is a sealant/adhesive composition.
10. The fastener of claim 9 wherein said coating is an epoxy.
11. The fastener of claim 8 wherein said coating is a sealant selected from the group consisting of a silicone, wax, urethane, neoprene and butyl rubber composition.
12. The fastener of claim 1 further comprising a compressible sealant gasket disposed in said recess.
13. The fastener of claim 1 wherein said recess has a substantially annular shape.
14. A metal panel assembly comprising:
a first metal panel having a first opening;
a second metal panel having a second opening aligned with said first opening and overlying said first panel;
fastener means for fastening said panels together comprising:
head means having a top portion and an underside disposed adjacent one said panel and recess means for defining a recess at said underside;
shank means defining a central axis and extending from said underside through said opening and terminating in a tapered distal tip, said shank means having a spiral buttress thread extending from a location adjacent said proximal end and comprising a support surface which is oriented at an angle between 0 degrees and 15 degrees relative to said axis wherein a portion of said support surface engages the other said panel; and a coating disposed between said head and said one panel and between said shank and adjacent portions of the first and second panels, so that said panels are locked together between said head means and engaging portions of said buttress thread, and said coating seals between said head means and said one panel and portions of said first and second panels surrounding said shank means.
a first metal panel having a first opening;
a second metal panel having a second opening aligned with said first opening and overlying said first panel;
fastener means for fastening said panels together comprising:
head means having a top portion and an underside disposed adjacent one said panel and recess means for defining a recess at said underside;
shank means defining a central axis and extending from said underside through said opening and terminating in a tapered distal tip, said shank means having a spiral buttress thread extending from a location adjacent said proximal end and comprising a support surface which is oriented at an angle between 0 degrees and 15 degrees relative to said axis wherein a portion of said support surface engages the other said panel; and a coating disposed between said head and said one panel and between said shank and adjacent portions of the first and second panels, so that said panels are locked together between said head means and engaging portions of said buttress thread, and said coating seals between said head means and said one panel and portions of said first and second panels surrounding said shank means.
15. The assembly of claim 14 wherein said recess is annular and said coating is disposed in said recess.
16. The assembly of claim 14 wherein said coating is an epoxy.
17. The assembly of claim 14 wherein said coating is a sealant selected from the group consisting of a silicone, wax, urethane, neoprene or butyl rubber composition.
18. A fastener for fastening a pair of metal panels comprising:
head means comprising a top portion and an underside and recess means for defining an annular recess at said underside;
shank means integrally extending from said underside at a proximal end and terminating at a distal tip and defining an axis thereof, said recess surrounding said shank means at said proximal end, said shank means having a spiral buttress thread extending from a location adjacent said proximal end, said spiral buttress thread having a support surface inclined at an angle between 0 degrees and 15 degrees to a normal line to said axis;
self-drilling means adjacent said distal tip for self-drilling into a metal panel; and coating means for sealing between said fastener and said panels comprising a sealant composition disposed in said recess and engaging said shank means proximate said proximal end, whereby said buttress thread is engageable against said metal panels to clamp said metal panels against said head means.
head means comprising a top portion and an underside and recess means for defining an annular recess at said underside;
shank means integrally extending from said underside at a proximal end and terminating at a distal tip and defining an axis thereof, said recess surrounding said shank means at said proximal end, said shank means having a spiral buttress thread extending from a location adjacent said proximal end, said spiral buttress thread having a support surface inclined at an angle between 0 degrees and 15 degrees to a normal line to said axis;
self-drilling means adjacent said distal tip for self-drilling into a metal panel; and coating means for sealing between said fastener and said panels comprising a sealant composition disposed in said recess and engaging said shank means proximate said proximal end, whereby said buttress thread is engageable against said metal panels to clamp said metal panels against said head means.
19. The fastener of claim 18 wherein an integral flange radially extends at the underside of said head means.
20. The fastener of claim 18 wherein said composition comprises a two part epoxy.
21. The fastener of claim 18 wherein said composition is a sealant selected from the group consisting of a silicone, wax, urethane, neoprene and butyl rubber composition.
22. The fastener of claim 1 wherein said buttress thread has a root diameter and said self-drilling means is located at a self-drilling portion of said shank, said self-drilling portion having a diameter which is less than the root diameter of said buttress thread.
23. The metal panel assembly of claim 14 wherein said buttress thread has a root diameter and said self-drilling means is located at a self-drilling portion of said shank, said self-drilling portion having a diameter which is less than the root diameter of said buttress thread.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US965,238 | 1992-10-23 | ||
| US07/965,238 US5304023A (en) | 1992-10-23 | 1992-10-23 | Metal panel fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2146125A1 CA2146125A1 (en) | 1994-05-11 |
| CA2146125C true CA2146125C (en) | 1998-09-22 |
Family
ID=25509680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002146125A Expired - Lifetime CA2146125C (en) | 1992-10-23 | 1993-10-19 | Metal panel fastener |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5304023A (en) |
| CA (1) | CA2146125C (en) |
| WO (1) | WO1994010465A1 (en) |
Families Citing this family (55)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5622464A (en) * | 1995-08-22 | 1997-04-22 | Illinois Tool Works Inc. | Screw with increased driving resistance at proper depth |
| US5744197A (en) * | 1996-08-26 | 1998-04-28 | J. B. Faith Co. | Method of protecting aluminum skins of land vehicles from corrosion |
| US5947670A (en) * | 1996-09-20 | 1999-09-07 | Illinois Tool Works Inc. | Self-drilling fastener |
| AUPO502997A0 (en) * | 1997-02-11 | 1997-03-06 | W.A. Deutscher Pty Ltd | Fastening screw and fastening system |
| US5816012A (en) * | 1997-03-10 | 1998-10-06 | Alpine Engineered Products, Inc. | Dual threaded fastener and metal component assembly |
| US5868051A (en) * | 1997-08-28 | 1999-02-09 | Pakos Group | Method and apparatus for machining with a pivoting cutting tool |
| AUPP047697A0 (en) | 1997-11-20 | 1997-12-18 | W.A. Deutsher Pty Ltd | Fastening screw and method of forming same |
| US7014386B1 (en) * | 1998-01-15 | 2006-03-21 | Wayne-Dalton Corp. | Screw connection of components to sheet material and method of effecting connection |
| US7070376B1 (en) * | 1999-12-14 | 2006-07-04 | Simpson Strong-Tie Company, Inc. | Self-drilling, self-anchoring fastener for concrete |
| US6394726B1 (en) * | 2000-05-31 | 2002-05-28 | Illinois Tool Works Inc. | Threaded fastener |
| US6702537B2 (en) * | 2001-01-12 | 2004-03-09 | Illinois Tool Works Inc. | High profile thread forming screw |
| GB2388172B (en) * | 2002-09-13 | 2004-04-21 | Adrian Oldham | Self adhesive fasteners |
| US20040052610A1 (en) * | 2002-09-17 | 2004-03-18 | David Kaupanger | Dome headed roofing screw |
| US20040136803A1 (en) * | 2002-11-27 | 2004-07-15 | Grosch Gregory E. | Fastener for fiberglass and other composite structures |
| US20040156696A1 (en) * | 2002-11-27 | 2004-08-12 | Grosch Gregory E. | Fastener for fiberglass and other composite structures |
| US20050089384A1 (en) * | 2003-10-22 | 2005-04-28 | Pratt Adam D. | Fastener with adhesive |
| FR2871861A1 (en) * | 2004-06-21 | 2005-12-23 | Axitherm Sarl | Sealed rivet especially for fastening thin material has supple seal adhering to rivet and avoiding any need for previous or subsequent operation |
| US7329077B2 (en) | 2004-07-01 | 2008-02-12 | Curtis David A W | Fastener apparatus for roofing and steel building construction |
| US7600957B2 (en) * | 2005-11-28 | 2009-10-13 | Nd Industries, Inc. | Expandable sealant for fasteners |
| US8092128B1 (en) * | 2007-02-20 | 2012-01-10 | Bray Alan V | Self-sealing fasteners |
| US7963732B2 (en) * | 2008-04-24 | 2011-06-21 | Triangle Fastener Corporation | Threaded fastener |
| DE102008045412A1 (en) * | 2008-09-02 | 2010-03-04 | Sfs Intec Holding Ag | Screw and thus established connection between a profile and an outer wall |
| US20100077676A1 (en) * | 2008-10-01 | 2010-04-01 | Install/Consult, Llc | Architectural panel hanger |
| DE102008059572A1 (en) * | 2008-11-28 | 2010-06-02 | Schaeffler Kg | Shaft-hub connection between a pulley and a generator shaft and belt-driven starter generator with such a shaft-hub connection |
| TWI400394B (en) | 2009-02-12 | 2013-07-01 | Yugen Kaisha Art Screw | Fastening members and fastening structures |
| US20110083396A1 (en) * | 2009-10-09 | 2011-04-14 | Illinois Tool Works Inc. | Stucco fastener |
| US8529178B2 (en) * | 2010-02-19 | 2013-09-10 | Nucor Corporation | Weldless building structures |
| US9004835B2 (en) | 2010-02-19 | 2015-04-14 | Nucor Corporation | Weldless building structures |
| DE102010047637A1 (en) * | 2010-10-06 | 2012-04-12 | Profil Verbindungstechnik Gmbh & Co. Kg | functional element |
| BR112013010824A2 (en) | 2010-11-02 | 2018-05-02 | Systems And Materials Res Corporation | method and mechanism for making and using an automatic seal fastener |
| US20130089389A1 (en) * | 2011-10-10 | 2013-04-11 | Illinois Tool Works Inc. | Fastener with low profile head and washer |
| DE102012001086A1 (en) * | 2012-01-20 | 2013-07-25 | Profil Verbindungstechnik Gmbh & Co. Kg | Bolt element and method for attaching a bolt element to a component made of a composite material |
| US8770904B2 (en) * | 2012-10-22 | 2014-07-08 | Engineered Components Company | Composite non-wood flooring threaded fastener |
| KR20170003929A (en) * | 2014-05-12 | 2017-01-10 | 일리노이즈 툴 워크스 인코포레이티드 | Liquid-resistant sealing fastener assembly |
| US9377046B1 (en) * | 2014-05-15 | 2016-06-28 | Infinite Technologies, Inc. | Fastener assembly |
| WO2016184475A1 (en) * | 2015-05-20 | 2016-11-24 | Bladena Aps | A wind turbine and a wind turbine blade |
| US10197086B2 (en) * | 2015-07-31 | 2019-02-05 | Infastech Intellectual Properties Pte. Ltd | Threaded fastener |
| DE102015222889B4 (en) * | 2015-11-19 | 2018-10-11 | Baier & Michels Gmbh & Co. Kg | Thread-forming or thread-forming screw, in particular for use in light metal and arrangement of screw and nut component |
| CA2964008C (en) | 2016-05-02 | 2023-10-24 | Nucor Corporation | Double threaded standoff fastener |
| AT518783B1 (en) * | 2016-11-17 | 2018-01-15 | Hans Künz GmbH | hollow profile |
| EP3330548B1 (en) * | 2016-11-30 | 2021-01-20 | Newfrey LLC | Fixing element and method for its production |
| US11098747B2 (en) * | 2016-12-15 | 2021-08-24 | SR Systems, LLC | Self-sealing fastener and method of use |
| US20180172045A1 (en) * | 2016-12-17 | 2018-06-21 | Ford Global Technologies, Llc | Friction Element Weld Element Modification To Increase Corrosion Resistance of Thermal Mechanical Joint |
| US10815574B2 (en) * | 2017-01-06 | 2020-10-27 | Nd Industries, Inc. | Coated article and related methods |
| JP6829799B2 (en) * | 2017-04-26 | 2021-02-17 | 株式会社小野工業所 | Reinforcing bar |
| JP6853463B2 (en) * | 2017-04-26 | 2021-03-31 | 株式会社小野工業所 | Reinforcing bar |
| CA3072757C (en) * | 2017-08-31 | 2023-11-28 | The Hillman Group, Inc. | Sheet metal screw |
| JP6792776B2 (en) * | 2017-09-19 | 2020-12-02 | 株式会社小野工業所 | Reinforcing bar |
| WO2020041426A1 (en) * | 2018-08-22 | 2020-02-27 | Omg, Inc. | Self-sealing fastener and collated strips thereof for integrated sheathing |
| US11174892B2 (en) * | 2019-09-25 | 2021-11-16 | Wei-Chih Chen | Screw assembly having enhanced airtight effect |
| US11428009B2 (en) | 2019-09-30 | 2022-08-30 | Bmic Llc | Self-sealing roof fastener |
| US11085189B2 (en) | 2020-01-13 | 2021-08-10 | Building Materials Investment Corporation | Impact resistant roofing systems and methods |
| CA3172393A1 (en) | 2020-03-23 | 2021-09-30 | Bmic Llc | Fastening systems for attaching fabric to a roof deck |
| EP3945145A1 (en) * | 2020-07-29 | 2022-02-02 | SFS Intec Holding AG | Zn-ni as a coating layer on self-drilling screws of austenitic stainless steel |
| DE102020128662B4 (en) | 2020-10-30 | 2022-05-12 | Omnitechnik Mikroverkapselungs Gmbh | Screw and screw connection with underhead coating |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2380724A (en) * | 1944-01-12 | 1945-07-31 | Lestershire Spool And Mfg Comp | Wood screw |
| US3022197A (en) * | 1957-02-21 | 1962-02-20 | Jedicka Helmut | Securing threaded connections |
| US3578762A (en) * | 1969-04-14 | 1971-05-18 | Armco Steel Corp | Self-drilling, reaming and tapping screw |
| US3639137A (en) * | 1969-10-09 | 1972-02-01 | Ncr Co | Metal fastening coated with pressure-activatable encapsulated sealant system |
| US3882752A (en) * | 1972-02-01 | 1975-05-13 | Elco Industries Inc | Controlled-drive sealing fastener |
| ZA738037B (en) * | 1972-10-30 | 1975-07-30 | Deutsher Pty Ltd | Drill screw |
| US4003175A (en) * | 1975-06-30 | 1977-01-18 | Johns-Manville Corporation | Fastener and roof arrangement using the fastener |
| AT368609B (en) * | 1980-10-02 | 1982-10-25 | Sfs Stadler Ag | METAL SCREW |
| US4642011A (en) * | 1982-11-22 | 1987-02-10 | Toacosei Chemical Industry Co., Ltd. | Composition for rust prevention of metals and threaded metal elements with a rustproof film |
| AT380545B (en) * | 1984-05-25 | 1986-06-10 | Sfs Stadler Ag | SCREW |
| JPS61127910A (en) * | 1984-11-26 | 1986-06-16 | 株式会社 丸エム製作所 | Anchor bolt |
| US4907926A (en) * | 1985-02-15 | 1990-03-13 | Wing George S | Thread form and fastener system using the form |
| US4657460A (en) * | 1986-03-17 | 1987-04-14 | Chrysler Motors Corporation | Self-bonding threaded fasteners and method of curing same |
| US4730970A (en) * | 1986-11-12 | 1988-03-15 | Whyco Chromium Company | Selectively hardened self drilling fasteners |
| US4900208A (en) * | 1988-06-09 | 1990-02-13 | Kaiser Norbert O | Roofing fastener |
| US5100274A (en) * | 1990-10-29 | 1992-03-31 | Illinois Tool Works Inc. | Roofing fastener and improved screw therefor |
-
1992
- 1992-10-23 US US07/965,238 patent/US5304023A/en not_active Expired - Lifetime
-
1993
- 1993-10-19 CA CA002146125A patent/CA2146125C/en not_active Expired - Lifetime
- 1993-10-19 WO PCT/US1993/009986 patent/WO1994010465A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO1994010465A1 (en) | 1994-05-11 |
| CA2146125A1 (en) | 1994-05-11 |
| US5304023A (en) | 1994-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2146125C (en) | Metal panel fastener | |
| CA1169685A (en) | Fastener plate and assembly | |
| US4749322A (en) | Aluminum roof panel fastener | |
| US4799845A (en) | Means for attaching sheet material to a substrate | |
| JPS63261044A (en) | Fastener assembly for roof covering material | |
| US4987714A (en) | Method for installing a roof fastener | |
| CA2016158C (en) | Non-seating plate/fastener assembly | |
| US4441295A (en) | Grid system adhering technique and method of practicing same | |
| CA2183843C (en) | Screw with increased driving resistance at proper depth | |
| US4483112A (en) | Roof edge system | |
| CA2805585C (en) | Roof insulation fastening system | |
| US20170047884A1 (en) | Photovoltaic module mounting system | |
| US5908278A (en) | Stress plate with depending sleeve | |
| GB2157788A (en) | Anchoring devices | |
| US4881861A (en) | Fastening assembly | |
| US4619094A (en) | Non-penetrating mechanical fastener for roofing membrane and method of applying same | |
| US20060002784A1 (en) | Fastener apparatus for roofing and steel building construction | |
| US5907938A (en) | Anti-backout roof fasteners | |
| EP0008134B1 (en) | Chip catching washers | |
| JP3448256B2 (en) | Roof repair method, roof repair structure and roof repair clamp | |
| WO1996011311A1 (en) | Preassembled fastening element | |
| AU2011202566A1 (en) | A cladding fastener | |
| EP0108533A1 (en) | Fastener and seal combination | |
| JPH0314492Y2 (en) | ||
| US11929704B1 (en) | Method and system for securing a solar panel to a tile roof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20131021 |